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These keyless chucks are produced with an integral shank to maximize concentricity between the body, shank and jaws. They start as a one-piece high alloy body which is turned, then finish ground throughout, making them as close to zero TIR (Total Indicated Runout) as can be. A spanner is provided to ease jaw opening. Takes 7/16"-20 drawbar.

  • R-8 5/8"
  • Reviews

    9 Customer Reviews (4.9 out of 5 stars) : Sign in to write a review

    Anonymous Reviewer
    Very good product 05/13/2020 12:19:08 PM

    Bought this as a gift for my son it was delivered in plenty of time and he loved it. I will order from you again in the future

    Anonymous Reviewer
    Excellent chuck 09/25/2019 4:31:28 PM

    So glad I decided to buy this chuck it's well worth the money and no run out

    Anonymous Reviewer
    06/12/2019 11:07:15 AM

    Arrived yesterday so I put it right in my mill to check runout. I dont really have a perfect standard - the one I used has .002 at 4 from collet. When chucked in this keyless chuck, sure enough it read .002 which is good enough for me. It exudes quality and in undeniably beautiful.

    Anonymous Reviewer
    Returned, very poor quality. 03/27/2019 11:29:28 AM

    By no means a precision item. Run-out was excessive and unpredictable when chucking different sizes. Returned.

    Anonymous Reviewer
    02/13/2019 2:47:57 PM

    No feedback given

    Anonymous Reviewer
    04/15/2018 12:51:23 PM

    No feedback given

    Anonymous Reviewer
    Nice chuck. 12/15/2017 8:39:56 PM

    The chuck is well made , although I would prefer it had been made in the USA. The concentricity and runout are within the specified limits.

    King B
    Great Customer Service 10/29/2017 5:52:06 PM

    I bought this about a month ago and the first one had a manufacturing flaw. I contacted customer service, had a return label the next day and a new chuck came three days later.. Excellent care, thank you Grizzly.

    Nathan P
    10/11/2017 12:35:47 PM

    This was a replacement for a standard Jacob's chuck attached to an R8 spindle that was bent by about .002". I wish I had done this a long time ago. No more wandering of the drill bits and with the spanner wrench no more slipping and chewing up the shanks of the bits which is common with standard keyed chucks. Best chuck I have ever used.